Inclusion Criteria:

• Adult patients defined by age ≥18 years.
• Pathologically confirmed advanced solid tumors for which standard therapy proven to provide clinical benefit does not exist or is no longer effective
• Evaluable disease, either measurable on imaging or with informative tumor marker(s), by RECIST (Response Evaluation Criteria in Solid Tumors) criteria.

Exclusion Criteria:

• Pregnancy or lactation. Women of childbearing potential must have a negative pregnancy test within 7 days prior to enrolment. Male and female patients of childbearing potential must agree to use appropriate birth control (barrier methods with spermicides, oral or parenteral contraceptives and/or intrauterine devices) during the entire duration of the study, or the patient must be surgically sterile (with documentation in the patient's medical records).
• Previous malignancy, except for non-basal-cell carcinoma of skin or carcinoma-in-situ of the uterine cervix, unless the tumor was treated with curative intent more than 2 years prior to study entry.
• Receipt of more than 3 prior regimens of chemotherapy.
• Chemotherapy or radiotherapy within 4 weeks (6 weeks for nitrosoureas or mitomycin C) prior to baseline. Receipt of radiotherapy to >25 % of bone marrow. Major surgery within 4 weeks prior to baseline.
• Concomitant treatment with, or anticipated use of, pharmaceutical or herbal agents which are potent inhibitors or inducers of cytochrome P450 enzymes unless approved by the Sponsor.
• Uncontrolled intercurrent illness that would jeopardize patient safety, interfere with the objectives of the protocol, or limit patient compliance with study requirements, as determined by the Investigator.